19798836 has 24 divisors (see below), whose sum is σ = 48629280. Its totient is φ = 6252192.

The previous prime is 19798819. The next prime is 19798861. The reversal of 19798836 is 63889791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43191 + ... + 43646.

It is an arithmetic number, because the mean of its divisors is an integer number (2026220).

Almost surely, 2^19798836 is an apocalyptic number.

It is an amenable number.

19798836 is an abundant number, since it is smaller than the sum of its proper divisors (28830444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19798836 is a wasteful number, since it uses less digits than its factorization.

19798836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86863 (or 86861 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 19798836 is about 4449.5882955617. The cubic root of 19798836 is about 270.5286214238.

The spelling of 19798836 in words is "nineteen million, seven hundred ninety-eight thousand, eight hundred thirty-six".